The flagship Canon zoom lens version II.Angle of view (horzntl, vertl, diagnl): 74° - 29°. 53° - 19°30', 84° - 34 Lens construction (elements/groups): 18/13 No. of diaphragm blades: 9 Minimum aperture: 22 Closest focussing distance (m): 0.38(Macro) Maximum magnification (x): 0.21(at 70mm) Distance Information: Provided AF actuator: Ring USM¹ PHYSICAL SPECIFICATIONS Dust/moisture resistance : Yes Filter diameter (mm): 82 Max. diameter x length (mm): 88.5 x 113 Weight (g): 805